Synthesis of Polycyclic Benzofused Nitrogen Heterocycles via a Tandem Ynamide Benzannulation/Ring-Closing Metathesis Strategy. Application in a Formal Total Synthesis of (+)-FR900482
作者:Xiao Yin Mak、Aimee L. Crombie、Rick L. Danheiser
DOI:10.1021/jo2000308
日期:2011.3.18
variety of functionalized substituents at the position ortho to the nitrogen. In the second stage of the tandem strategy, ring-closingmetathesis generates the nitrogen heterocyclic ring. This two-step sequence provides efficient access to highly substituted dihydroquinolines, benzazepines, benzazocines, and related benzofused nitrogen heterocyclic systems. The application of this chemistry in a concise
Synthesis of vinylpyrroles, vinylfurans and vinylindoles via a Brønsted acid catalyzed highly regio- and stereoselective cis-hydroarylation of ynamides
作者:Yanshi Zhang
DOI:10.1016/j.tet.2005.11.079
日期:2006.4
A highly regio- and stereoselective Brønsted acid-catalyzed coupling of ynamides and aromatic heterocycles, such as pyrroles, furans, and indoles is described. This process is the equivalent of hydroarylation of ynamides, and leads to the efficient syntheses of an array of vinylheterocycles. Diels–Alder reaction between the vinylindoles and DMAD afforded carbazole derivatives in good yields.
Batch and Flow Photochemical Benzannulations Based on the Reaction of Ynamides and Diazo Ketones. Application to the Synthesis of Polycyclic Aromatic and Heteroaromatic Compounds
作者:Thomas P. Willumstad、Olesya Haze、Xiao Yin Mak、Tin Yiu Lam、Yu-Pu Wang、Rick L. Danheiser
DOI:10.1021/jo402010b
日期:2013.11.15
compounds are produced via a two-stage tandem benzannulation/cyclization strategy. The initial benzannulation step proceeds via a pericyclic cascade mechanism triggered by thermal or photochemical Wolff rearrangement of a diazo ketone. The photochemical process can be performed using a continuous flow reactor which facilitates carrying out reactions on a large scale and minimizes the time required for
SYNTHESIS OF YNAMIDES BY N-ALKYNYLATION OF AMINE DERIVATIVES. PREPARATION OF N-ALLYL-N-(METHOXYCARBONYL)-1,3-DECADIYNYLAMINE
作者:Kohnen, Amanda L.、Dunetz, Joshua R.、Danheiser, Rick L.、Denmark, Scott E.、Liu, Xiaorong
DOI:10.15227/orgsyn.084.0088
日期:——
Syntheses of vinylindoles via a Brønsted acid catalyzed highly regio- and stereoselective cis-hydroarylation of ynamides
作者:Yanshi Zhang
DOI:10.1016/j.tetlet.2005.07.098
日期:2005.9
A highly regio- and stereoselective Bronsted acid-catalyzed coupling of ynamides and indoles is described. This process is the equivalent of hydroarylation of ynamides and leads to the efficient syntheses of vinylindoles. Diels-Alder reaction between the vinylindoles and DMAD afforded carbazole derivatives in good yields. (c) 2005 Elsevier Ltd. All rights reserved.